激光辐照对光导型探测器性能的影响

Effect of Laser Irradiation on Performance of Photoconductive Detector

对比研究了光导型探测器在激光辐照前后对信号的输出响应特性,发现在受到较高功率但低于永久损伤阈值的激光辐照之后,探测器系统对相同信号的输出响应有了较大程度的改变。分析表明:在使用较高功率密度激光对探测器进行处理后,探测器系统的散热性能有了改善。根据缺陷的退杂化模型对探测器预处理前后性能的改变进行了分析,对实验现象进行了解释。这可以为今后改进探测器的设计和制作工艺,提高探测系统抗激光辐照能力提供参考依据。

The response characteristics of the detector before and after the laser irradiation are compared. After the irradiation of a higher power but below the permanent damage threshold, for the response of the same signal outputs, the detection system changes greatly. The analysis shows that the detector is processed using the high density laser, the heat dissipation of the detection system is improved. The change of the detector performance before and after the pre-processing is analyzed and the experimental phenomena are explained. This work provides the reference for the design and processing technology of detector and the ability of anti-laser irradiation for the detection system.